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Is -7.2 irrational

Updated: 10/19/2022
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-7.2 is rational. Rational numbers are numbers that can be written as a fraction. Irrational Numbers cannot be expressed as a fraction.

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Q: Is -7.2 irrational
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Is the square root of 72 a rational or irrational number?

The square root of 72 is an irrational number. Since 72 is not a perfect square, the decimal is endless. (just like the value of pi)


Is 8.48528137 an irrational number?

Yes 8.48528137 is an irrational number and the sqrt of 72.


What two integers fall between the irrational number -72?

This question cannot be answered. First, -72 is not an irrational number so the starting premise is false. Second, -72 is a single number. It is not possible to have any numbers between -72 and itself.


Is the square root of 72 x 16 irrational?

Yes.


What cubed equals 72?

The cube root of 72 is an irrational number; to 3 decimal places it is 4.160.


Is 72 an integer is a perfect square?

No because its square root is an irrational number


How do you determine that 72 isn't a square number?

Because the square root of it is an irrational number


What is the best approximation for the square root of 72?

The square root of 72 is an irrational number and there is no such thing as a best approximation for any irrational number. By definition, all irrational numbers are represented by infinitely long decimal strings and it is always possible to improve the approximation by calculating the value to one more decimal place. 8.48528 should be sufficiently accurate for most purposes.


Can you find irrational numbers between 7 and 8?

72 = 49 and 82 = 64. So, the square root of any integer between these two numbers, for example, sqrt(56), is irrational.


What is the sqaure root of 72?

The square root of 72 is 6x(sqrt2). You can find this by breaking 72 down into its prime factors (2x6x6 or 2x62). You can then take the square root of each part which means the 62 will become 6 and then because the sqrt2 is an irrational number it is left under the sqrt sign.


Is the square root of 5.777 rational or irrational?

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What is the exact diameter of an area rug with a circumference of 72 feet?

The exact diameter is 72/pi. It is not possible to give an exact numerical answer because pi is an irrational number and it is therefore impossible to express a [linear] multiple or division involving pi numerically.